Toggle Wi-fi without leaving your current app with either Search long press. Call long press. Call short press. See website for more info! Note you will NOT get an icon/shortcut in your application tray/launcher. You can only launch the app using one of the buttons described above. The "Open" button in the market app WILL NOT work either.
Use the opportunity to get the setup package of In-App Wifi Toggle 1.2 for free and take a look at users' reviews on Droid Informer. The app is designed for Android 1.5 and above. This application is totally secure for downloading. Oliver Pearmain is the developer of In-App Wifi Toggle that can be found in the Tools category.
Over 10K users set up the app and the most recent update was launched on May 19, 2010. Users rated this application 4 on Google Play.